Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4dff704f60967c0fbfe127b2edf93f46f56e00cf967350ce6bfe1199089ec860' 
  AND token = 'QnmrjsxCPrCR7eTmBEgqPS4U5Cc2ge/2E1Id0bBqSBI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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