Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '268df9d928edf630713bc2e5908117a95eafb864558a31f74ce7e359a8c7d151' 
  AND token = 'cGqbB2/f9uNxtoqZNLaK3j50Dg79L/r43/9iFFpTz2U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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