Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd06a7eb6bd830f2bc98ae819a3f7542e27c2c15e554aa19106aef827237dc812' 
  AND token = 'yZHLu0MxusKvzkM01EdH2u4ympnkWHWrDpVu/FDX3Xw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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