Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5fc341ad28a309342950fffa8ccfaa50d73e1302501a52fe5b625f7a38e14882' 
  AND token = 'ygd+lDUHDzwb32ZMNEIaQmLY1pEoXtpG5PNlwSxHaWg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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