Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5115827a846d1bc48196f957598bd96c5ddeab0dd6502f07fc2f62f212cbcef2' 
  AND token = 'Hmi1OKac2XbxI3l0pJT3grTiZ0f2EdubtmT2uLAs8/8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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