Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cee10a1570fb5cdf5de282e1230626aa92347a9e31c2fdf342971f9218428660' 
  AND token = 'JutbzVx7Rao9EJrY6cI9tj7jA7bh953Xifb/0cEmCzk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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