Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '26d7db070a709d9ea7c47eea19ece0b0f8484dba47d46834c93bccd950840199' 
  AND token = 'p0PgZFegwHbV+ZArUTEqZwTxZygAToxluf6uYteKKTk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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