Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '95b82be64853a0cc7acc0873c3a67c878572fc9c416a122e31c50a198591b823' 
  AND token = 'lbiZEZJLcRmQ1OQpEDk/e0sQkROWM53R2uH12cIqaac=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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