Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '26e1f1d83e0f8bc83f1ce13668d124d32fbd4e3b17b5fd288d4716a0b8075577' 
  AND token = '/b3wnKPC4tgTKSYQm1ue619U78/Yn+/VnxPFepZxO6w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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