Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c43e9bcce2e555e34f9bf4d5d8569d2b60058a090c71eccc1cfeeef4d4c13d8e' 
  AND token = 'gHcDTGW2ticM55drcVgm5aI245Ch31pflYbrHwImfOA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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