Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '53cf98f44be67aa79284d3d74795b692b879eb69da1832c5aaf09c2a4ec7acac' 
  AND token = 'hg0AMISTUFu8CniEyHP/d/hls33yBZKIgEi6aLxrhGE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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