Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f66d06a9c5802777d3b45035de9436676cd8fb7274a833c67b332da847302de0' 
  AND token = 'zN+Gjkq6qS8dqTytMufs4fKRtdG1z9ySr7EXBSpP+4k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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