Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a2b5193e7dfb1bf4ba1b73c005460146ddb7835ef14485c3b3de02c157d02eee' 
  AND token = 'p+tXyvHNp0erwCt2B1/jOpmZgiEG93JW+m/V6JE8dgo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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