Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f638646248dcc98e1da9a3550470bb341130ada961d53f1c9d1512a44f47ed1d' 
  AND token = 'mSW3P/wZAHkENcyXX2y4xgXo6uH/nF14VV2bcBsr0TE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00013

JSON explain

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