Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '53626f6259604f0c2ff37b0d9ceb47b377acc72095531a8adeb702fc02117b48' 
  AND token = 'L2DzQ73OHMXxMj1XgxqE0cGP3t48JjFt1D0EMvCdEmQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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