Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e717981558371c938ecec54459b92bd7415d14f501fb12187dadf708e0c80a9d' 
  AND token = 'ZiS0BIg3fkTGmC5s0Vacvku2YDqxDonnxXqp0vRwnZE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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