Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '077d51c92740c19e2924bd5fb54151dab944b9d7e406d188c5cddb185799a1d1' 
  AND token = 'UM1KFpWMHup/gh/RapfKzpXugEwgkkTprT04sm0dfRU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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