Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9c399444ca77f37f9bb023554665d53a713edd6af848f2e7895deaecbced7cfd' 
  AND token = 'pbgzH7mlLCXrGJMH4NT4kJbEyWPrtNg6FFla5pQa0rM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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