Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ee0e0ab062adf2d0cb442afd6fe7ca879153c7b0108a86ca4cd843b64f55d013' 
  AND token = 'dB2ouwnWO84d4DaNaCuwhiIMEuGgqC8Xj7ChDh35PxE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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