Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '84c3461677451abd89f628a1e945c3fed165335d3a1172a516f438cc80e54ccc' 
  AND token = 'S5J2Pybn5FTJ69N6OoSVwd0AE20JHpO5vFm2Wz1Jh0Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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