Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cca98a517e4370ef611ea207326581046a44a8673bbf9610b06f795847ea1032' 
  AND token = 'J5UI7PXmchXre7RSNLVX195tWYQzaZ451JF55yRb61E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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