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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '127d8274d7a23ba653ed2bdc5a4d5ac32bbb5562e8c630d3c6f1dfc5bbfb46bb' 
  AND token = 'dZgbdl04vyJPGN1x9gys02Spds8KlOpXkE62zFcvqCA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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