Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '577b5ebeb6ffe3e24b988bf95385280218f79b14093523eae12526c662816a4a' 
  AND token = 'uj29NLtTi2O+jZWG9EV5fUDLh64zYhekWNvyakneyAY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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