Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7dbd1cf3ff2c4d081415216d23b3ba7271b3c3b2131cef06ad4e849f06218e80' 
  AND token = '/xe/ie04CRLHeU619wDBM/0Ug1xm+rtSGMgq25E59bY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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