Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4293ae75449ba155095344da7002a2320fb8ee03dcb2b67f239d9773331490fc' 
  AND token = 'j7GgRhhqQzpmPo4aNS6FGa4B0JmALiBZ6zA16JGWTy4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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