Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '71cf2251099e779653fc0ed360a87e499feac2ba1d1ad62d3ad3a88a1a0ebc5e' 
  AND token = '0Q96FaCZxnoqD3rCOqt4KdPd06Ms2OTJP4FgzGZcMn0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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