Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aef0fe50bbd4a058c07c237260bc3df2d35c1cfcf375ae911256407db782018e' 
  AND token = 'jL9obIBdwzkRGOWPR2LGy/2iUUNpJ/7o0RDvUT5YQZU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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