Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '59aa2cb193b43cd4f2c717da8c9e1741c152ae18d6789be06f5c2443f2209669' 
  AND token = 'rD9/TwOdxiAFD4mNonJMob+kft0ky0cSzKQTAKC+d5s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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