Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '92cdb6a15e907b4f00aa124aaaf0c945c1ec536681e68ed82b621b420e914369' 
  AND token = 'b2oQkhLGyUBC07Djzfxse9MdFyAgTk9wk43ft0q8Xe4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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