Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e32d7a5887a256b72dd5c67e4c0627a0cbc4cdfc2dec23515f3e1f1c77de09bf' 
  AND token = 'm48otF1HwIipITiIjyCri3VDfWatpAHJza03CscbehM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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