Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dd47077b5a6c23c9c9863b6b83c1ea363d0735ed53c10b8d486c14a61777ae45' 
  AND token = 'p0cG8yx34AgzxU7UGEWi0xYNoLuzTTgjS56r6mv1320=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00069

JSON explain

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