Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '00cb0eca83072022e12902fd9889d6dad2edaea8684548de67a681451ff4314d' 
  AND token = 'Gap4NSfZacPhjEUnLpch2A8HLkNxVD5kf8X4IGLBcIQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}