Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e39fd0a043c4ef4e98b81fd1c37817a60f76031cac4cc46ad0ad5a2cbe333172' 
  AND token = 'hz824ZnQWm+bxh8yxvJ4Wy33ED8YQnFcPP1DC6hhFGA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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