Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '44cc29502b1fd53f979d85e61e1dc1316c9e11cd9477abd8f15bacca59986d90' 
  AND token = 'd11WmYK5Rk2umPwP7zuBnvmWRRWGVYEbUYkipTrZbuU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}