Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '529a672a29b6bbd62c3235f5be96be08d8c00738d968c2577fea3588f0204d36' 
  AND token = '8mtFTcaCFmqlb1EYqR1x0B+neAyEWmFEJ08RDvKPeag=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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