Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2327b3c5c387d7e778b27b530a026cfb15993f09165281b27ee5477461486936' 
  AND token = 'ny0r0E++SdgkNAd6vZnjWoHWvJxxS9HquMIiH1j0AMQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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