Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'da59a4fac50fd244d401b104da7ff73be1cc66c94616ebf710d3a0d1ea34f0cc' 
  AND token = 'a19QFkcalRO4pFLBDWCHUxSCXbUu0xhDKJT8fu9/exI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}