Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8c4b07d075147821728276de9d5c983214995504c2f08cbdb8e1465535b4e0a9' 
  AND token = 'gU5hQHpwbLSmVETTC2mgfsSwH0XxqH0lx/MvQPPwZ4E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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