Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b39826c1bb5335346d2bac96a0ce7894062bed92251ffd4dcf19d9ddd11a7ba7' 
  AND token = 'DydiLkqJxMDBVvHwS8/AAKocQQMeX+Ez9HW1h2iSQ0M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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