Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5f91717f4d45947cc49d78b5eed85144b27161a80a2925e2400ca0e1ef60cfd6' 
  AND token = 'K12ZgV+P5TCuQyxVzffeSpxDCggHKJAfwnCFI4UArDE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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