Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '152fefa362bf2b47a900133e1649cba088d5f034886b669750b01ecd9284f43a' 
  AND token = 'zsv1ckq8PRCv1FgKyNBReMe3s3vuaYZaI4phvi6TpQs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00013

JSON explain

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