Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7c5e5373de934e06758bfd60d774dbe3f1d7481f222e35a520fbbc7b234b3808' 
  AND token = '2nvnH/bO1Dd3g6fNiLmK6AZHpAXl1yZTrJjA5cbPp6I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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