Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bd3f3fd0a65501744a88817944607564202c7cd1796c96155466bfc3dca57c62' 
  AND token = 'n0hkSOK3XF8PA00o1MFgLDeGMMXqc/w6/Y85KJqZdYo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00058

JSON explain

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