Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a581e83bd56efd932c4bd48eb37f1bdecf157442844c2027d43822da65b6eeeb' 
  AND token = 'm8Q3DjUURSX/eCk53xJgae/ODWeJGix2QodlPWVgwFg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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