Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e319e43f382cbc893dfdd329b4e4475e056145d52794c060a958bc2c3c42ac2e' 
  AND token = 'vVNiNxhgO1SSMFdGU4sWlM4OoJ8SbO+bS0YEqJiKbiI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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