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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ed2e7bbe5c8a70f9043b6c388db81abaceed0b20e69c514168ea4af4f832de17' 
  AND token = 'AbRT9JIEJHNsxaNXwY3Lus43bNWVLdfE+MAMENUroSw=' 
  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"
    }
  }
}