Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f33121c5d278f0d2791e1fea56f04dc6c132547000204e855f07e48353c4e847' 
  AND token = 'MP3dOsae7om+/Xt7oR9EPdl/jkmC5fipJ1TMQsnjtGk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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