Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4814c1b6502a76e9208105a0b7307b9d8c302b001e7cca1a6b1a428061b3b46d' 
  AND token = 'jBKXZZ58onPQOpPpR54r3qu7zUntpAKGRmL1+NJk03w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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