Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '064b1477d254d36eb72ebae293f5afa318cdb291ae83e7182e002aa3d0d8bafc' 
  AND token = 'Zn/DzNxWvl9HC96kycnbhGnQ3YIkL27+eSG1nx2Y2TI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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