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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd92d8436fd9134e3632d9f54c3f1ba4a8938700c37c62f36379f4b13dd874105' 
  AND token = 'yQgdX2HE2Q5M27xyYT5OjR0ft7zwyc8eRYRsrKqksp4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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