Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aebd4c7b29ca088a9a46d9aa749118ef91989cabc2c93ece54c9215d519553a7' 
  AND token = 'wbG+CI9SdFrQIbGEglBsh444jfmpDO9fnuwyODvE19c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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