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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd25866117c703556333ada5dcb3428d6b4828f2ace3aad3643b19eba1e3ad91b' 
  AND token = 'oKEQez2OX40WuZATVK0yV3hJaOUdgdYw7jm0HXhQcpQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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