Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '869f41866e100bec9724a722acee803829d1984ed2ae04015387ea31a328b9a1' 
  AND token = 'E7fNDxQJrqbakR3EzGvJicnEulKX8vfidM0L6CVtO4w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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