Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6dba49711cd9a5e9f000b80f82566c071bf0230dda049075a23573440c57ec48' 
  AND token = 'Qc3TDGxm99XbOV4WCDr6127qigIp4Ff2r9s4ecilSJo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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