Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6c5806390db686f1ea31875391da4ccccda131191780e834bbc5347c79d4116a' 
  AND token = 'EJhi+xUidoQL2O1uUNVd6F8yFdYnnfCqGumpsbGH/c4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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