Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd99b01c7bf9cb5bef9982ec5a72085216e6cfe4580c7e21ac627a111af624488' 
  AND token = 'jYSPw9WisVRpS/Amf/fwMY4/42iMFz+iWphAmmTI+EE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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