Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3c36979d2a37aa0b554a18fd4d384f46c9d911e9409e0b0ac434fe7278a94b2f' 
  AND token = 'sILfmMeuoS85KAIC81AhWp6W8mgBPs0pSNQE+Pf2B/o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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