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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '22fbf5922d291385062f8e04cfb8ed6aaae76a6871f421b1336d1aa91b725f89' 
  AND token = 'bJKFvlimm7MvZMPX6DvF6Cy1frP5hjT71yOmyBVK6Rc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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