Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'be7465e30d3e13e02985d103bef223c66e216531bb211c349b2cb21b03ef5c89' 
  AND token = 'dAkaq9DpXgPGHBE/AOaFCrcnKKI4Nn56FfHOjZgO6tY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00054

JSON explain

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