Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aab925e2cb699310d65ad461246d1140d8e7f302fea101df74a6dbd785294499' 
  AND token = 'zUVz2TIrZfJFY2fK4VpShuxZQUVdjXNrTilOivX3ydU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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