Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '21d27981363ef92479f437d52ee5546635b9ac320a15e9a0ec441cbbcff17b22' 
  AND token = 'o00Z4/N+NtkcJw9E91WiiwDzqYdUTEMjSG5LVYSZP+E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00056

JSON explain

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