Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c446744ace831c12afdc3874f0b95af1558f07897978a2d568c475d5704387c7' 
  AND token = 'Tm9+zFCEmRVSIIU0BsMGfZJjMc4GQTPj94napc/C448=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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