Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f7fbe457f2faf110b53156def7f1226bab7cab0b95fddee0528eda738687c9e2' 
  AND token = 'xbd6QDeyHMOgKAiJNDNqRPkYIPSba/2R+DC3pCvY/Mo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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