Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e62db0889727c1fa17cb543b400a0a10f038be0d8b4531e9dd50f8388f48b9f1' 
  AND token = 'vWurO9jBrY1RgtQ3kLZrJu7HsZCTmlcY0G4th2jPXWk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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