Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '999cfb1c2b834c64d913d68ab361754eec715bfa738a46df230da2dd6126cd2c' 
  AND token = 'LJLQzf6gk12jJnN2ndnk6AFd3HiSTIWm2Sx3kbON7SI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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