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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eaa8bf0ba28f34f3e3fa880c99eb9aefeeeaa8cb77f41220bf5f48c02700c234' 
  AND token = 'Lp7vO8f/9lDuDOesWYIu3BGmUJG6ENg29CimwuNMHNI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}