Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '47a5f1bf22dd8a0637b19eff25bf2abf86d39ad511c255c7287b85448eca8f3c' 
  AND token = 'kL/yzvDQBbV5MLwoclhq14/Eo62bnlw092uta7tYCsw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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